text: import os
  import pytest
  import pandas
  
  
  @pytest.fixture
  def root_dir():
      return os.path.dirname(os.path.realpath(__file__))
  
  
  @pytest.fixture
  def data_dir(root_dir):
      return os.path.join(root_dir, "data")
  
  
  @pytest.fixture
  def df(request, data_dir):
      path = getattr(request, "param", "draft_one.csv")
      file = os.path.join(data_dir, path)
      return pandas.read_csv(file)
  